Overcharge protection of lithium-ion batteries above 4 v with a perfluorinated phenothiazine derivative

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29 Scopus citations

Abstract

Electron-withdrawing substituents are introduced onto the phenothiazine core to raise its oxidation potential for use as a redox shuttle in high-voltage lithium-ion batteries. A perfluorinated derivative oxidizes at 4.3 V vs. Li+/0, and functions for ca. 500 h of 100% overcharge in LiNi0.8Co0.15Al0.05O2/graphite coin cells at a charging rate of C/10.

Original languageEnglish
Pages (from-to)5410-5414
Number of pages5
JournalJournal of Materials Chemistry A
Volume4
Issue number15
DOIs
StatePublished - Apr 21 2016

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2016.

Funding

We thank the National Science Foundation, Division of Chemistry for support under Award Number CHE-1300653 and through EPSCoR Award Number 1355438. SAO and CR thank the University of Kentucky's Vice President for Research and College of Arts & Sciences for start-up funds and a Diversity in Research Award. We also thank Andrew Jansen and Bryant Polzin at the Cell Manufacturing and Modeling Center at Argonne National Laboratory for battery electrodes and for advice in cycling experiments. The authors thank Celgard for providing polymer separators.

FundersFunder number
Andrew Jansen and Bryant Polzin
University of Kentucky's Vice President for Research and College of Arts & Sciences
National Science Foundation Arctic Social Science Program1300653
Synthetic Organic Chemistry DivisionCHE-1300653, 1355438

    ASJC Scopus subject areas

    • General Chemistry
    • Renewable Energy, Sustainability and the Environment
    • General Materials Science

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